ACK/cmnt: [SRU][E][PATCH 0/3] i915 hang fixes backported to 5.3
Kleber Souza
kleber.souza at canonical.com
Thu Apr 23 09:47:08 UTC 2020
On 23.04.20 05:46, Sultan Alsawaf wrote:
> BugLink: https://bugs.launchpad.net/bugs/1872001
>
> [Impact]
> Users of i915 on 5.3 experience GPU hangs.
>
> [Test]
> Seems to happen often when using a Chromium-based browser with hardware
> acceleration enabled.
>
> [Fix]
> Arighi backported three relevant fixes from upstream to fix the issue. I pulled
> them from https://git.launchpad.net/~arighi/+git/eoan-linux/log/?h=lp-1861395
>
> [Regression Potential]
> High, but these patches do seem to fix the problem.
My laptop was also affected by this and I can confirm that these patches fix
the issue and I have not seen any regression for now. Changes to i915 are always
risky, but as we have a couple of other people affected reporting the issue
is gone and these patches have been applied to Focal already for some time
so I think we should apply these for next cycle.
Acked-by: Kleber Sacilotto de Souza <kleber.souza at canonical.com>
>
> Sultan
>
> Chris Wilson (3):
> drm/i915/execlists: Preempt-to-busy
> drm/i915/gt: Detect if we miss WaIdleLiteRestore
> drm/i915/execlists: Always force a context reload when rewinding
> RING_TAIL
>
> drivers/gpu/drm/i915/gem/i915_gem_context.c | 2 +-
> drivers/gpu/drm/i915/gt/intel_context_types.h | 5 +
> drivers/gpu/drm/i915/gt/intel_engine.h | 70 +-
> drivers/gpu/drm/i915/gt/intel_engine_cs.c | 63 +-
> drivers/gpu/drm/i915/gt/intel_engine_types.h | 61 +-
> drivers/gpu/drm/i915/gt/intel_lrc.c | 716 ++++++++----------
> drivers/gpu/drm/i915/gt/intel_ringbuffer.c | 2 +
> drivers/gpu/drm/i915/i915_gpu_error.c | 19 +-
> drivers/gpu/drm/i915/i915_request.c | 6 +
> drivers/gpu/drm/i915/i915_request.h | 1 +
> drivers/gpu/drm/i915/i915_scheduler.c | 3 +-
> drivers/gpu/drm/i915/i915_utils.h | 12 +
> drivers/gpu/drm/i915/intel_guc_submission.c | 175 ++---
> drivers/gpu/drm/i915/selftests/i915_request.c | 8 +-
> 14 files changed, 522 insertions(+), 621 deletions(-)
>
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